[Zope] get user password

I'm using this code to try and get a user's password. from AccessControl import getSecurityManager request = context.REQUEST user = getSecurityManager().getUser() curpas = user._getPassword() but this gives me an error because i can't run a method that has a '_' in it's name. How do i then get a user's password? It would be nice to be able to mail people's password if they forget it :)